I am one of 28 first cousins on my paternal side. (Yes, I said 28.) Of these two dozen plus people, I am the oldest.
My father is one of ten siblings. He had five children—I am the first-born.
On my mother’s side, from four siblings, there are six surviving first cousins. And you know what? I am the eldest.
Also on my maternal line, I am the senior second cousin. (So you see what I am getting at here?)